Fangrui Product Details 1. B109s Bluetooth 5.0 Transmitter Receiver Suitable For 3.5mm Computertvspeaker 2. Bluetooth Version: Jl-5.0 3. Charging: Dc 5v 4. Battery: 300 Mah 5. Working Hours: 6 Hours 6. Charging Time: 2 Hours 7. Output: 3.5mm Audio Output 8. Support Automatic Search And Connection Of Bluetooth Devices To Achieve Wireless Audio Transmission 9. Built-in Aec Echo Cancellation And Anc Noise Cancellation Circuit, Gorgeous Stereo, More Pure Sound Quality 10. Built-in Enhanced Signal Transmission Circuit, Fast Connection, More Stable And Continuous Sound 11. Compatible With Dual Lossless Audio Formats 12. Support Aux Inout 13. Automatic Memory Connection Function, Easier Operation And More Convenient Connection 14. Built-in Battery, Long Battery Life 15. Smart Compatibility, Android, Ios System Mobile Phones And Pad, And Most Bluetooth Audio Devices 16. The Product Connection Is Simple, Without Any Tedious Driving And Downloading App 17. The Launch State Supports The One-to-one Function 18. Support Stereo In Transmit Mode 19. By Connecting With A Bluetooth Device (such As A Mobile Phone), Input The Audio To Other Audio Devices Without Bluetooth Function Using The Aux Interface 20. Connect The Aux To The Playback Device, And Transmit The Audio To The Bluetooth Receiving Device (such As A Bluetooth Headset) Through Bluetooth 21. Weight: About 50 Grams 22. Dimensions: 100x60x25mm